Trump's trade war with China is the biggest threat to the US economy in 2019, and it's making economists the most worried they've been in years

President Donald Trump's trade war with China was the top 2019 concern cited by US economists.

85% of economists surveyed by the Wall Street Journal also said risks for the US economy are tilted toward the downside, the most in at least three years.

Only four economists agreed with Trump's suggestion that the Federal Reserve is the biggest threat to the economy.

Some of the country's top economists are the most worried they've been in years about the US economy.

According to the Wall Street Journal's monthly survey of economists, about 85% of those surveyed said the risks for the US economy are tilting to the downside — the most since at least the start of 2015.

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New York Stock Exchange before the election

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., November 7, 2016. REUTERS/Brendan McDermid

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., November 7, 2016. REUTERS/Brendan McDermid

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., November 7, 2016. REUTERS/Brendan McDermid

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., November 7, 2016. REUTERS/Brendan McDermid

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., November 3, 2016. REUTERS/Brendan McDermid

Pedestrians walk along Wall Street near the New York Stock Exchange (NYSE) in New York, U.S., on Monday, Oct. 31, 2016. U.S. stocks rose from a six-week low amid an increase in deal activity as traders assessed the outlook for the presidential election and interest rates in the world's largest economy. Photographer: Michael Nagle/Bloomberg via Getty Images

NEW YORK, NY - NOVEMBER 01: Traders work on the floor of the New York Stock Exchange (NYSE) on November 1, 2016 in New York City. As Wall Street continues to feel election uncertainty, the Dow Jones closes fell more than 100 points. (Photo by Spencer Platt/Getty Images)

A trader works on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Friday, Nov. 4, 2016. U.S. stocks fluctuated amid payrolls data that bolstered speculation the economy is strong enough to weather higher interest rates, while investors remained wary before the looming presidential election. Photographer: Michael Nagle/Bloomberg via Getty Images

Traders work on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Friday, Nov. 4, 2016. U.S. stocks fluctuated amid payrolls data that bolstered speculation the economy is strong enough to weather higher interest rates, while investors remained wary before the looming presidential election. Photographer: Michael Nagle/Bloomberg via Getty Images

NEW YORK, NY - NOVEMBER 01: Traders work on the floor of the New York Stock Exchange (NYSE) on November 1, 2016 in New York City. As Wall Street continues to feel election uncertainty, the Dow Jones closes fell more than 100 points. (Photo by Spencer Platt/Getty Images)

A trader works on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Monday, Oct. 31, 2016. U.S. stocks rose from a six-week low amid an increase in deal activity as traders assessed the outlook for the presidential election and interest rates in the world's largest economy. Photographer: Michael Nagle/Bloomberg via Getty Images

The Journal survey seems to align with what major economists on Wall Street have forecast for the year ahead. Economists at JPMorgan, Bank of America Merrill Lynch, and Goldman Sachs all agreed that US GDP growth would slow in the second half of 2019, and they say the trade war could make the economic slowdown even worse.

While none of the Wall Street banks predicted a recession, they also suggested the economic risks were firmly titled toward the downside.

The fear is that by keeping the current tariffs in place for a longer period of time, increasing current tariff rates, and imposing even more tariffs could drive up prices of imported goods for US consumers and businesses. This would slow investment and consumer spending, harming GDP growth.

While signs of consumer inflation from the tariffs have been limited to a few items, businesses are already reporting cost pressures and disruptions from the trade war. And the longer Trump's fight with China continues, the more likely it starts to reach the average American consumer.